package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo2 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
        Statement state = connection.createStatement();

        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名:");
        String username =scanner.nextLine();
        System.out.println("请输入密码:");
        String password = scanner.nextLine();
        System.out.println("请输入昵称:");
        String nickname = scanner.nextLine();
        System.out.println("请输入年龄:");
        int age = scanner.nextInt();

        String sql ="INSERT INTO userinfo(username, password, nickname, age) "+"VALUES('"+username+"','"+password+"','"+nickname+"','"+age+"')";
        String sql1 ="DELETE FROM userinfo WHERE username='"+username+"'";
        int d = state.executeUpdate(sql1);//d表示影响数据库中的数据条数
        if (d>0){
            System.out.println("插入成功");
        }

    }
}
